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Finding the Fourth Proportional to 143,626.92, 198,213.02 and 79,963.32

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Solution

The fourth proportional to 143,626.92, 198,213.02 and 79,963.32 is: 110,353.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,626.92 : 198,213.02 = 79,963.32 : x
  2. Step 2: Convert to fraction form
    143,626.92/198,213.02 = 79,963.32/x
  3. Step 3: Cross multiply
    143,626.92x = 198,213.02 × 79,963.32
  4. Step 4: Simplify right side
    143,626.92x = 15,849,771,146.43
  5. Step 5: Solve for x
    x = 15,849,771,146.43/143,626.92
  6. Step 6: Final answer
    x = 110,353.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.